Abstract
Background: Electrical Discharge Machining (EDM) technology is an effective and practical method of the manufacturing of holes. The electro-discharge machine tool, which is mainly made up of machine tool, impulse power, and automatic feed adjustment device, etc., is the carrier of the machining technology of holes.
Objective: To meet the increasing requirement of machining accuracy and machining efficiency of EDM of holes, the mechanical structures and machining methods of EDM of holes are constantly being enhanced.
Methods: This paper retraces varieties of representative patents relevant to the electrical discharge machining technology.
Results: Through retracing the characteristics of different types of electrical discharge machining technology, the main problems existing in the current development such as the low machining efficiency are concluded and analyzed. Development of patents on mechanical structures and machining methods of EDM of holes in future is discussed.
Conclusion: The optimization and development of mechanical structures and machining methods of EDM of holes are beneficial to improve accuracy. More related patents on mechanical structures and machining methods of EDM of holes will be invented.
Keywords: Electrical discharge machining (EDM), electro-discharge machine tool, holes, machining methods, mechanical structures, machining technology.
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